Design of broadband reflector at the visible wavelengths using particle swarm optimization
We design and theoretically investigate freestanding gallium nitride (GaN) high contrast grating (HCG) membranes as broadband reflectors operating at the visible wavelengths. Optimization of the grating structural parameters is accomplished by using particle swarm optimization (PSO), and rigorous co...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2019-07-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5090287 |
| _version_ | 1818920046917844992 |
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| author | Shumin He Qifa Liu Tongliang Sa Zhenhai Wang |
| author_facet | Shumin He Qifa Liu Tongliang Sa Zhenhai Wang |
| author_sort | Shumin He |
| collection | DOAJ |
| description | We design and theoretically investigate freestanding gallium nitride (GaN) high contrast grating (HCG) membranes as broadband reflectors operating at the visible wavelengths. Optimization of the grating structural parameters is accomplished by using particle swarm optimization (PSO), and rigorous coupled-wave analysis (RCWA) method is adopted to evaluate the optical spectrum and internal electric field intensity distribution of all structures. The proposed reflector exhibits a 99% reflectance bandwidth of 84 nm, and good angular insensitivity of about 10.2° at the wavelength of 470 nm. The tolerance of fabrication deviation is also examined by numerical analysis of the reflector performance through varying the grating structural parameters. The GaN HCG broadband reflector can be potentially assembled in GaN-based vertical cavity surface-emitting lasers (VCSELs) or other novel integrated photonic devices. |
| first_indexed | 2024-12-20T01:15:32Z |
| format | Article |
| id | doaj.art-4a4e398665d5412fb2806724913bc33a |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-20T01:15:32Z |
| publishDate | 2019-07-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-4a4e398665d5412fb2806724913bc33a2022-12-21T19:58:35ZengAIP Publishing LLCAIP Advances2158-32262019-07-0197075301075301-610.1063/1.5090287004907ADVDesign of broadband reflector at the visible wavelengths using particle swarm optimizationShumin He0Qifa Liu1Tongliang Sa2Zhenhai Wang3School of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, ChinaSchool of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, ChinaSchool of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, ChinaSchool of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, ChinaWe design and theoretically investigate freestanding gallium nitride (GaN) high contrast grating (HCG) membranes as broadband reflectors operating at the visible wavelengths. Optimization of the grating structural parameters is accomplished by using particle swarm optimization (PSO), and rigorous coupled-wave analysis (RCWA) method is adopted to evaluate the optical spectrum and internal electric field intensity distribution of all structures. The proposed reflector exhibits a 99% reflectance bandwidth of 84 nm, and good angular insensitivity of about 10.2° at the wavelength of 470 nm. The tolerance of fabrication deviation is also examined by numerical analysis of the reflector performance through varying the grating structural parameters. The GaN HCG broadband reflector can be potentially assembled in GaN-based vertical cavity surface-emitting lasers (VCSELs) or other novel integrated photonic devices.http://dx.doi.org/10.1063/1.5090287 |
| spellingShingle | Shumin He Qifa Liu Tongliang Sa Zhenhai Wang Design of broadband reflector at the visible wavelengths using particle swarm optimization AIP Advances |
| title | Design of broadband reflector at the visible wavelengths using particle swarm optimization |
| title_full | Design of broadband reflector at the visible wavelengths using particle swarm optimization |
| title_fullStr | Design of broadband reflector at the visible wavelengths using particle swarm optimization |
| title_full_unstemmed | Design of broadband reflector at the visible wavelengths using particle swarm optimization |
| title_short | Design of broadband reflector at the visible wavelengths using particle swarm optimization |
| title_sort | design of broadband reflector at the visible wavelengths using particle swarm optimization |
| url | http://dx.doi.org/10.1063/1.5090287 |
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